diff --git a/src/impl/list_ports/list_ports_osx.cc b/src/impl/list_ports/list_ports_osx.cc
index 29da120..3fa001e 100644
--- a/src/impl/list_ports/list_ports_osx.cc
+++ b/src/impl/list_ports/list_ports_osx.cc
@@ -278,7 +278,8 @@ serial::list_ports(void)
 
         devices_found.push_back(port_info);
     }
-
+    
+    IOObjectRelase(serial_port_iterator);
     return devices_found;
 }